Delf’s 500 series Cavity Slide sets features a 65mm Round Escutcheon that sits almost flush with the door. Offering great value & style to suit every house, it comes in three functions - Entrance set, Passage & Privacy for every sliding cavity door solution. They come complete with Thumb Pull for the edge of the door for ease of use. Entrance sets are for Sliding Entry doors that require a locking function for security. They require a key for entrance or exit from tboth sides. Passage sets are for Cavity Sliding doors that don’t require any locking or privacy function - such as a Laundry or Dining Room. Privacy sets are used on Cavity Sliding doors where a Privacy function is required - such as Bathrooms and Bedrooms. These have an emergency release on the outside. These Cavity Door Sets are perfect for replacing old Cavity Door Furniture where the face hole through the door is no bigger than 54mm. All 500 series Delf Cavity Door Sets come with a 7 year Quality Guarantee Specifications Model name Cavity Slider sets Round Brand Delf Trade Material Zinc Alloy / Steel Backset 60mm Suits Doors of thickness 33-38mm Product Dimensions Installation Instructions To view and download the installation instructions please click on the links below: Entrance Set Privacy Set Passage Set